LEGO Minecraft Moving Forward

Today, the LEGO CUUSOO Blog announced the concept for LEGO Minecraft has been approved. From the LEGO CUUSOO Blog:

We’re happy to announce that the Minecraft project on LEGO CUUSOO has passed the LEGO review and we are now developing a concept that celebrates the best aspects of building with the LEGO system and in Minecraft. We can’t wait to show it to you—but it isn’t ready just yet. These things take time, so we appreciate your patience. More details are to come.

I can’t shake the feeling these sets will be limited, perhaps to online outlets such as shop.LEGO.com. I realize Minecraft is fairly popular, but is it popular enough? Or, better yet, will it remain popular over the period of time it takes for these potential LEGO Minecraft sets to see the light of store shelves?